condition	mean	min	max
4 h after light	11.21297	9.25684	13.1691
8 h after light	8.67821	8.62902	8.7274
12 h after light	9.584615	9.49763	9.6716
4 h after dark	17.1002	15.7973	18.0986
8 h after dark	18.3047	17.3228	20.0806
12 h after dark	14.696566666666667	12.9084	16.1826